Unit for an electronically regulated braking system

Abstract

The present invention relates to a unit for an electronically controlled brake system including a motor ( 2 ) that drives a pump ( 21 ) by way of a shaft ( 3, 4 ), said pump being arranged in a valve or pump block ( 1 ) and supplying hydraulic fluid into wheel brakes of the brake system. A controller unit ( 11 ) is provided on a side of the valve or pump block ( 1 ) opposite to the motor ( 2 ). The unit further includes at least one sensor ( 12, 13, 14 ) for sensing the rotational speed of the motor ( 2 ) or the shaft ( 3, 4 ). According to the invention, at least one sensor element ( 14 ) of the sensor ( 12, 13, 14 ) is arranged in the area of the controller unit ( 11 ) in order to reduce the mounting space required for the unit, lower the production costs and simplify signal transmission.

1 . Unit for an electronically controlled brake system including a motor ( 2 ) that drives a pump ( 21 ) by way of a shaft ( 3 ,  4 ), said pump being arranged in a valve or pump block ( 1 ) and supplying hydraulic fluid into wheel brakes of the brake system, and a controller unit ( 11 ) provided on a side of the valve or pump block ( 1 ) opposite to the motor ( 2 ), wherein the unit comprises at least one sensor ( 12 ,  13 ,  14 ;  19 ,  20 ) for sensing the rotational speed of the motor ( 2 ) or the shaft ( 3 ,  4 ), 
 characterized in that at least one sensor element ( 14 ,  19 ) of the sensor ( 12 ,  13 ,  14 ;  19 ,  20 ) is arranged in the area of the controller unit ( 11 ).    
     
     
         2 . Unit as claimed in  claim 1 , 
 characterized in that the controller unit ( 11 ) includes a board ( 10 ), and the sensor element ( 14 ,  19 ) is connected directly to the board ( 10 ) by way of an electrical contacting ( 15 ).    
     
     
         3 . Unit as claimed in  claim 1  or  2 , 
 characterized in that the sensor ( 12 ,  13 ,  14 ;  19 ,  20 ) is designed as an optical sensor ( 12 ,  13 ,  14 ) or a magneto-sensitive sensor ( 12 ,  13 ,  14 ;  19 ,  20 ).  
 
     
     
         4 . Unit as claimed in any one of the preceding claims, 
 characterized in that a coding element ( 13 ,  20 ) of the sensor ( 12 ,  13 ,  14 ;  19 ,  20 ) is unrotatably arranged on the shaft ( 3 ,  4 ).    
     
     
         5 . Unit as claimed in  claim 4 , 
 characterized in that the coding element ( 13 ,  20 ) is magnetic or at least includes an optical contrast.    
     
     
         6 . Unit as claimed in  claim 4  or  5 , 
 characterized in that a cover ( 12 ) is provided between the coding element ( 13 ) and the sensor element ( 14 ).  
 
     
     
         7 . Unit as claimed in  claim 6 , 
 characterized in that the cover ( 12 ) has an anti-magnetic and/or transparent design.    
     
     
         8 . Unit as claimed in any one of the preceding claims, 
 characterized in that the controller unit ( 11 ) is an independent component.